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A106966 as a simple table

na(n)
13
27
311
437
559
661
7113
8151
9197
10313
11317
12353
13419
14463
15499
16563
17593
18733
19757
20859
21881
22907
23929
24941
25977
26997
271021
281033
291109
301123
311223
321237
331249
341283
351451
361481
371543
381559
391613
401741
411759
421811
431867
441877
451889
461901
471907

[3,7,11,37,59,61,113,151,197,313,317,353,419,463,
 499,563,593,733,757,859,881,907,929,941,977,997,
 1021,1033,1109,1123,1223,1237,1249,1283,1451,1481,
 1543,1559,1613,1741,1759,1811,1867,1877,1889,1901,
 1907]